28398123

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 47121984

約数和(自身を除く): 18723861

約数列:

[1, 3, 9, 13, 23, 39, 61, 69, 117, 173, 183, 207, 299, 519, 549, 793, 897, 1403, 1557, 2249, 2379, 2691, 3979, 4209, 6747, 7137, 10553, 11937, 12627, 18239, 20241, 31659, 35811, 51727, 54717, 94977, 137189, 155181, 164151, 242719, 411567, 465543, 728157, 1234701, 2184471, 3155347, 9466041, 28398123]

約数ペア:

[(1, 28398123), (3, 9466041), (9, 3155347), (13, 2184471), (23, 1234701), (39, 728157), (61, 465543), (69, 411567), (117, 242719), (173, 164151), (183, 155181), (207, 137189), (299, 94977), (519, 54717), (549, 51727), (793, 35811), (897, 31659), (1403, 20241), (1557, 18239), (2249, 12627), (2379, 11937), (2691, 10553), (3979, 7137), (4209, 6747)]